356 Pleistopliora gigantea, Tlielohaii 
connective tissue are occasionally observed within the cysts (Diagrams 
VIII and IX). 
It is impossible to determine the exact number of sporoblasts 
produced by a single pansporoblast, because the sporoblasts do not 
remain attached to each other after division as is the case in other 
microsporidia, but judging by the number of the pairs of nuclei con¬ 
tained in a pansporoblast this number must be about 3-6. The number 
of sporoblasts contained in a cyst is of course dependent on the size of 
the latter, which is very variable (cf. Diagrams XI, XII). 
Diagram XIV. (Magnification of Diagram I.) Large cysts with sporoblasts and spores 
(only the outlines of the spores are indicated). 
Diagram XV. (Magnification of Diagram I.) Cyst (6) with sporoblasts and pansporo¬ 
blasts, surrounded by connective tissue containing three trophozoites (a). 
